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1958
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More right-solid
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encyclopaedia britannica films
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A/V Geeks
by Encyclopaedia Britannica Films
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Uses micro-photography and magnification to portray the habits and life history of the common housefly and the ways in which it is a menace to health. Traces physical development from egg-laying through larval and pupal stages to the emergence of the young fly. Magnified views reveal biological structure and methods of carrying and spreading disease germs. Suggests practical control methods.
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